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Port2 (fieldbus): connectors S4, S5 MODBUS RTU/CANopen
Figure 31
Port2: Fieldbus Modbus RTU/CANOpen interface
Table 28
Connector S4
RJ10 4-4 pin
4
3
2
1
Cable type: flat telephone cable for fin 4-4 conductor 28AWG
Table 29
Connector S5
D-SUB 9 pins female
5
4
3
2
1
9
8
7
6
Cable type: Shielded 2 pairs 22/24AWG conforming to CANopen.
26
Nr� Pin
Name
1
GND1 (**)
2
Rx/Tx+
3
Rx/Tx-
4
+V (reserved)
Nr� Pin
Name
1
-
2
CAN_L
3
CAN_GND
4
-
5
(CAN_SHLD)
6
(GND)
7
CAN_H
8
-
9
(CAN_V+)
Description
-
Data reception/transmission (A+)
Data reception/transmission (B-)
-
Description
Reserved
CAN_L bus line (domination low)
CAN Ground
Reserved
Optional CAN Shield
Optional Ground
CAN_H bus line (domination high)
Reserved
Optional CAN external positive supply
(dedicated for supply of transceiver
and optocouplers, if galvanic isolation
of the bus node applies)
80993B_MHW_GFW-Xtra_06-2018_ENG
S5 male connector
S4 female connector
Red Led
Green Led
Note
(**) Connect the GND signal
between Modbus devices with a
line distance > 100 m.
Note
Connect the terminal resistances
as shown in the figure.
node 1
. . . . . . . .
node n
CAN_H
CAN Bus Line
CAN_L
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